1990 Limited starting problem - HELP
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I remove the front end of the driveshaft for better access.
Drill the upper hole of the CPS to 3/8".
And do the ground refreshing real soon along with the connector refreshing and ICU/coil connectors.
Drill the upper hole of the CPS to 3/8".
And do the ground refreshing real soon along with the connector refreshing and ICU/coil connectors.
Thread Starter
Seasoned Member
Joined: Feb 2013
Posts: 302
Likes: 22
From: Seattle
Year: 1990
Model: Cherokee
Engine: 4.0
Highmileage,
Did you ever remember that fix? I still haven't gotten to the cps replacement, life keeps gettin in the way of important things
Did you ever remember that fix? I still haven't gotten to the cps replacement, life keeps gettin in the way of important things
Thread Starter
Seasoned Member
Joined: Feb 2013
Posts: 302
Likes: 22
From: Seattle
Year: 1990
Model: Cherokee
Engine: 4.0
FIXED! Sorry guys, going thru some old posts and realized I never posted the fix I found. It was a bad ecu! When I disconnected the battery, it would reset and start a few times. Then not start again
I got lucky and found a local guy on CL with another 90 ecu for $15 and figured wtf, I'll try it. Fixed the problem!
I got lucky and found a local guy on CL with another 90 ecu for $15 and figured wtf, I'll try it. Fixed the problem!
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Much thanks for getting back. And the crowd cheers! 


. Glad to hear it's solved. I guess you would need the put the old ECU back to be sure it wasn't just the connector. But hey if that's it, you could sell one on CL!



. Glad to hear it's solved. I guess you would need the put the old ECU back to be sure it wasn't just the connector. But hey if that's it, you could sell one on CL!
Thread Starter
Seasoned Member
Joined: Feb 2013
Posts: 302
Likes: 22
From: Seattle
Year: 1990
Model: Cherokee
Engine: 4.0
Tried the old one to be sure, and it was the ecu for sure! I took vengeance with my .45 on it!
Boy did that feel good after SO much frustration!
Boy did that feel good after SO much frustration!
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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